Hi everyone,
at Qt Contributor’s Summit it came up that
QSharedMemory/QSystemSemaphore are fundamentally broken and will be
binned. [1]
I found that we have a few users of those classes according to lxc:
QSystemSemaphore:
* Solid optical disc handling
* Digikam server starter
QSharedMemory:
* Marble
* KMemFile used by KSycoca
* Solid again
* Snorenotify
* Amarok
* Kdenlive
At a glance it looks like some (e.g. Solid) can probably use QLockFile
or are Linux-specific and can use memfd
Qt folks are aware of QtSingleApplication but we couldn’t really speak
of the other use cases, in particular KSycoca.
Cheers
Kai Uwe
[1]
https://lists.qt-project.org/pipermail/development/2023-November/044680.html
